When to plant in Humble, TX
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Humble, Texas — all computed from Humble's nearest NOAA weather station.
Humble enjoys a long ~299-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9b is warm enough that Humble can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Humble is now 5 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
HOUSTON INTERCONT AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Humble’s own odds, recorded at HOUSTON INTERCONT AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 25 | Mar 2 | Feb 5 | Nov 6 | Nov 25 | Dec 14 |
| 32°F | Mar 12 | Feb 13 | Jan 12 | Nov 17 | Dec 9 | Jan 11 |
| 28°F | Mar 2 | Jan 27 | Dec 26 | Dec 2 | Jan 2 | Feb 2 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Humble, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 28 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Humble planting FAQ
When is the last spring frost in Humble, TX?
Plan for the last spring frost in Humble around February 13 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Humble, TX?
Expect Humble's first fall frost near December 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Humble in?
Humble is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Humble?
There are roughly 299 frost-free days in Humble (a long growing season), running from the average last frost around February 13 to the first fall frost near December 9.
When should I plant tomatoes in Humble?
In Humble, start tomato seeds indoors around December 19–January 2, then transplant seedlings outdoors around February 20 once the danger of frost has passed.
Never miss a window in Humble
An email when it’s time to start seeds, transplant, and sow — timed to Humble’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Atascocita · 7 km
- Aldine · 14 km
- Spring · 14 km
- Cloverleaf · 24 km
- Houston · 26 km
- Channelview · 26 km
- Galena Park · 27 km
- The Woodlands · 31 km
Frost dates recorded at HOUSTON INTERCONT AP, 9 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Humble, TX — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012960. Retrieved from https://blissgarden.com/texas/humble.